how to pass JQL url as C# query string

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C#3.5

Jira

I passd below url as query string to get issues from jira api.

<pre lang="c#">

private const string m_BaseUrl = "http://jaisu1255048d:8080/rest/api/2/search?jql=project=%'VSETI'%'\u002f'";
        private const string m_BaseUrl = "http%3A//jaisu1255048d%3A8080/rest/api/2/search%3Fjql%3Dproject%3D%25%27VSETI%27%25%27%5Cu002f%27";

but i am getting error can any one please correct me and help me how to pass right jql url in c# query string i have place both encoded and non encoded format url above.